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|
#!/bin/sh
# unbind-bind-write.sh
#
# Simple test of binding and unbinding a device
#
# Copyright (C) 2013 Horms Soltutions Ltd.
#
# Contact: Simon Horman <horms@verge.net.au>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License.
set -e
#set -x
if [ $# -lt 2 ]; then
echo "usage: $(basename $0) DRIVER DEVICE_NAME [CHECK_PATH...]" >& 2
exit 1
fi
DRIVER="$1"; shift
DEVICE_NAME="$1"; shift
SYSFS_BASE_DIR="/sys/bus/platform/drivers/$DRIVER"
SYSFS_DEV_DIR="$SYSFS_BASE_DIR/$DEVICE_NAME"
CHECK_PATH="$SYSFS_DEV_DIR $@"
exists ()
{
for i in $CHECK_PATH; do
if [ ! -e "$i" ]; then
echo \'$i\': No such file or directory >&2
exit 1
fi
done
}
echo "Test device files exists"
exists
echo "Unbind device"
echo "$DEVICE_NAME" > "$SYSFS_BASE_DIR/unbind"
echo "Test that block device and sysfs directory no longer exist"
for i in $CHECK_PATH; do
if [ -e "$i" ]; then
echo Failed to unbind \'$DEVICE_NAME\': \'$i\' still exists >&2
exit 1
fi
done
echo "Bind device"
echo "$DEVICE_NAME" > "$SYSFS_BASE_DIR/bind"
echo "Wait for device files to be recreated"
for i in $(seq 1 32); do
OK="true"
for i in $CHECK_PATH; do
if [ ! -e "$i" ]; then
OK="false"
break
fi
done
if [ "$OK" = "false" ]; then
sleep 1
else
break
fi
done
echo "Test that device files once again exist"
exists
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